Apparatus

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sensors Mode-S transponder

7812E2

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1399 · BOEING 737 MAX 8

Hex
7812E2
Octal
36011342
Decimal
7,869,154
Country
CN
Tail
B-1399
Type
B38M
No current signal · last broadcast 12h ago
Flights observed
100
Distinct callsigns
20
Country
CN
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 7812E2.

Country allocation

The ICAO 24-bit address 7812E2 falls within the block assigned to China (CN) by ICAO Annex 10, Volume III. Every aircraft registered in China receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 20 distinct

Callsign Airline Flights Last seen
CCA871 Air China 8 2026-05-29
CCA902 Air China 7 2026-06-10
CCA821 Air China 7 2026-06-11
CCA1491 Air China 6 2026-05-06
CCA901 Air China 5 2026-06-10
CCA872 Air China 5 2026-05-29
CCA792 Air China 4 2026-06-10
CCA702 Air China 4 2026-06-13
CCA959 Air China 3 2026-06-09
CCA551 Air China 3 2026-05-06
CCA960 Air China 2 2026-06-09
CCA800 Air China 2 2026-05-25
CCA799 Air China 2 2026-05-25
CCA782 Air China 2 2026-06-03
CCA701 Air China 2 2026-05-23
CCA1446 Air China 2 2026-06-12
CCA1445 Air China 2 2026-06-12
CCA1414 Air China 2 2026-06-03
CCA1258 - 2 2026-06-04
CCA1257 - 2 2026-06-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-13 CCA702 DAC → PEK Jun 13, 18:00 UTCJun 13, 18:40 UTC40m
2026-06-13 CCA1207 PEK → LHW Jun 13, 02:35 UTCJun 13, 16:20 UTC13h 44m
2026-06-12 CCA1446 KMG → PEK Jun 12, 10:20 UTCJun 12, 10:40 UTC20m
2026-06-12 CCA1445 PEK → KMG Jun 12, 02:45 UTCJun 12, 03:05 UTC20m
2026-06-11 CCA821 PEK → HKT Jun 11, 05:30 UTCJun 11, 15:20 UTC9h 50m
2026-06-10 CCA792 NQZ → XIY Jun 10, 15:25 UTCJun 11, 03:25 UTC12h 0m
2026-06-10 CCA792 NQZ → XIY Jun 10, 07:45 UTCJun 11, 03:25 UTC19h 40m
2026-06-10 CCA902 UBN → PEK Jun 10, 05:25 UTCJun 10, 05:50 UTC25m
2026-06-10 CCA901 PEK → UBN Jun 10, 01:10 UTCJun 10, 01:20 UTC10m
2026-06-09 CCA960 BKK → PEK Jun 9, 12:55 UTCJun 9, 14:35 UTC1h 40m
2026-06-09 CCA959 PEK → BKK Jun 9, 06:20 UTCJun 9, 10:45 UTC4h 25m
2026-06-09 CCA118 HKG → PEK Jun 9, 00:45 UTCJun 9, 01:00 UTC15m
2026-06-08 CCA117 PEK → HKG Jun 8, 09:55 UTCJun 8, 13:50 UTC3h 55m
2026-06-08 CCA1847 PEK → NKG Jun 8, 03:20 UTCJun 8, 03:30 UTC10m
2026-06-07 CCA1446 KMG → PEK Jun 7, 10:10 UTCJun 7, 10:35 UTC25m
2026-06-07 CCA1445 PEK → KMG Jun 7, 02:45 UTCJun 7, 03:05 UTC20m
2026-06-06 CCA821 PEK → HKT Jun 6, 05:20 UTCJun 6, 15:10 UTC9h 50m
2026-06-05 CCA792 NQZ → XIY Jun 5, 15:45 UTCJun 6, 03:25 UTC11h 40m
2026-06-05 CCA792 NQZ → XIY Jun 5, 08:00 UTCJun 6, 03:25 UTC19h 25m
2026-06-05 CCA108 HKG → PEK Jun 5, 03:10 UTCJun 5, 03:25 UTC15m
2026-06-04 CCA107 PEK → HKG Jun 4, 12:30 UTCJun 4, 15:35 UTC3h 5m
2026-06-04 CCA1258 - Jun 4, 10:00 UTCJun 4, 10:15 UTC15m
2026-06-04 CCA1257 - Jun 4, 01:00 UTCJun 4, 01:15 UTC15m
2026-06-03 CCA1414 KMG → PEK Jun 3, 07:30 UTCJun 3, 15:10 UTC7h 40m
2026-06-03 CCA782 TBS → URC Jun 3, 05:20 UTCJun 3, 05:35 UTC15m
2026-06-02 CCA782 TBS → URC Jun 2, 18:50 UTCJun 2, 19:20 UTC30m
2026-06-02 CCA781 URC → TBS Jun 2, 12:00 UTCJun 2, 16:15 UTC4h 15m
2026-05-30 CCA1215 PEK → KHG May 30, 22:50 UTCMay 30, 23:05 UTC15m
2026-05-30 CCA1933 PEK → NNG May 30, 07:50 UTCMay 30, 08:05 UTC15m
2026-05-30 CCA902 UBN → PEK May 30, 05:40 UTCMay 30, 06:00 UTC20m
2026-05-29 CCA872 KUL → PEK May 29, 16:40 UTCMay 29, 20:10 UTC3h 30m
2026-05-29 CCA871 PEK → KUL May 29, 09:05 UTCMay 29, 15:00 UTC5h 55m
2026-05-28 CCA1335 PEK → NNG May 28, 23:30 UTCMay 28, 23:55 UTC25m
2026-05-28 CCA1414 KMG → PEK May 28, 14:55 UTCMay 28, 15:20 UTC25m
2026-05-28 CCA1413 PEK → KMG May 28, 07:45 UTCMay 28, 08:05 UTC20m
2026-05-28 CCA902 UBN → PEK May 28, 05:35 UTCMay 28, 05:55 UTC20m
2026-05-28 CCA901 PEK → UBN May 28, 01:10 UTCMay 28, 01:25 UTC15m
2026-05-27 CCA980 BKK → PEK May 27, 19:10 UTCMay 27, 20:50 UTC1h 40m
2026-05-27 CCA979 PEK → BKK May 27, 12:10 UTCMay 27, 16:40 UTC4h 30m
2026-05-27 CCA902 UBN → PEK May 27, 07:15 UTCMay 27, 07:30 UTC15m
2026-05-27 CCA901 PEK → UBN May 27, 02:29 UTCMay 27, 02:44 UTC15m
2026-05-26 CCA902 UBN → PEK May 26, 05:25 UTCMay 26, 05:45 UTC20m
2026-05-26 CCA901 PEK → UBN May 26, 01:00 UTCMay 26, 01:10 UTC10m
2026-05-25 CCA800 ALA → PEK May 25, 21:15 UTCMay 25, 21:35 UTC20m
2026-05-25 CCA799 PEK → ALA May 25, 10:05 UTCMay 25, 10:20 UTC15m
2026-05-23 CCA702 DAC → PEK May 23, 16:35 UTCMay 23, 16:55 UTC20m
2026-05-23 CCA701 PEK → DAC May 23, 14:05 UTCMay 23, 14:50 UTC45m
2026-05-22 CCA1643 PEK → HRB May 22, 00:30 UTCMay 22, 00:40 UTC10m
2026-05-21 CCA872 KUL → PEK May 21, 16:20 UTCMay 21, 19:50 UTC3h 30m
2026-05-21 CCA871 PEK → KUL May 21, 08:45 UTCMay 21, 14:30 UTC5h 45m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the B-1399 page for operator, model, and routing details .

Mode-S 7812E2 frequently asked

What is Mode-S code 7812E2?
7812E2 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1399.
Where is Mode-S 7812E2 registered?
Mode-S code 7812E2 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7812E2 broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7812E2, octal 36011342, decimal 7,869,154.
What flights does 7812E2 operate?
Mode-S 7812E2 has broadcast 20 distinct callsigns, including CCA871, CCA902, CCA821, CCA1491, CCA901.